SAFETY SIGNAL OUTPUT DEVICE, MOUNTING MEMBER, SAFETY SYSTEM AND MONITORING NULLIFICATION METHOD

To properly nullify monitoring of electric signals with a simple configuration.SOLUTION: A safety signal output device includes a connector capable of electrically connecting a second device different from a first device. The connector includes at least a first terminal, a second terminal, a third terminal, and a fourth terminal. The safety signal output device outputs electric signals having different timings to the first terminal and the third terminal, respectively. The safety signal output device outputs a safety signal when an electric signal timely corresponding to an output timing of the electric signal to the first terminal is input from the fourth terminal to the safety signal output device, and when an electric signal timely corresponding to the output timing of the electric signal to the third terminal is input from the second terminal to the safety signal output device. When a mounting member is mounted on the connector, the first terminal and the fourth terminal are electrically connected to each other, and the third terminal and the second terminal are electrically connected to each other.SELECTED DRAWING: Figure 3 【課題】簡単な構成で、電気信号の監視を適切に無効化する。【解決手段】安全信号出力装置は、第１装置とは異なる第２装置を電気的に接続可能なコネクタを備える。前記コネクタは、少なくとも、第１端子と、第２端子と、第３端子と、第４端子と、を備える。前記安全信号出力装置は、前記第１端子と前記第３端子に対して、タイミングを互いに異ならせた電気信号をそれぞれ出力する。安全信号出力装置は、前記第１端子への電気信号の出力タイミングに時期的に対応した電気信号が前記第４端子から当該安全信号出力装置に入力され、かつ、前記第３端子への電気信号の出力タイミングに時期的に対応した電気信号が前記第２端子から当該安全信号出力装置に入力される状態のときは、安全信号を出力する。装着部材が前記コネクタに装着されると、前記第１端子と前記第４端子とが電気的に接続され、前記第３端子と前記第２端子とが電気的に接続される。【選択図】図３